There is no need to explain what a barren flower is, even to novice gardeners. The appearance of such flowers does not bode well for the gardener in terms of harvest.
Let's figure out what caused the formation of barren flowers in the cucumber bed and whether it is possible to somehow influence the situation.
It is clear that a barren flower is a male flower that is not capable of producing ovaries. To harvest, female flowers are needed.
This can be avoided by growing parthenocarpic hybrids, which do not require pollination and produce a tolerable harvest.
The main thing to remember is that you don't need to pick off empty flowers, this will only speed up their new growth. They will dry out on their own.
How many times have we been told that seeds should only be purchased from a trusted supplier? Approximately the same thing will happen if you unknowingly collect seeds from hybrid fruits.
Seeds 2-3 years old are suitable for planting. Seeds from last year's season produce a lot of barren flowers. You can try to prepare the material for planting. To do this, they are warmed up, soaked in a 1% solution of potassium permanganate for 20-30 minutes, dried for a month and stored in a room with an air temperature of 25-28 degrees Celsius.
You can overwater cucumbers and the problem will come itself. Watering with cold water or in cold weather only harms the matter.
Air temperature of 27 degrees Celsius and hot dry air have a detrimental effect on pollination. At this time, it is important to monitor the watering regime - twice a day.
In cold summers, female flowers may not appear. Air temperatures below 15 degrees Celsius can easily leave you without a harvest.
The best place for a cucumber bed is the south-eastern side of the plot. If the seedlings are already growing in the shade, you can limit watering and pinch the main vine.
If cucumbers start to get fat, they will no longer care about fruits. This happens when there is an excess of nitrogen.
And the last thing that can spoil your harvest plans is dense planting. On average, gardeners adhere to the 40/40 cm scheme. But if you pinch the main whip, you can stop the growth, which will promote the growth of female flowers.